An injury has forced Sam Stout out of UFC 137, and in his place Donald “Cowboy” Cerrone has stepped in and will face Dennis Siver in Las Vegas.

The new bout was confirmed to MMAWeekly.com by sources close to the match-up on Monday.

Donald ‘Cowboy’ Cerrone might soon give the Miller brothers a run for their money for a fighter stepping in on short notice when someone is injured. This will be 2 out of his last 3 fights that Cerrone has stepped in for another fighter when the injury bug struck.

Since moving over to the UFC from the WEC, Cerrone has gone 3-0 with rapidly improving skills each step along the way.

In his last trip to the Octagon, Cerrone made short work of young Brazilian fighter Charles Oliveira, blasting him out in the first round in their fight at UFC on Versus 5 in Milwaukee.

The Team Jackson fighter will now face a top ten opponent in Dennis Siver, who looks to win his fifth fight in a row when he fights Cerrone in October.